WMSIC Electronic Components

SHIKUES FMMT491

ModelFMMT491
PackageSOT-23
BrandSHIKUES
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
SHIKUES FMMT491
Type
SHIKUES
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SHIKUES
Electronic Component
FMMT491
Electronic Component
1
Package
SOT-23
Electronic Component
1 NPN
Electronic Component
Transistor(BJT)
Electronic Component
0.035g
Electronic Component
1
Electronic Component
BM0228038144
Transistor Type
NPN
Frequency(f T)
100MHz
Power Dissipation(Pd)
300mW
Electronic Component
Electronic Component
Electronic Component
3000
Collector Current(Ic)
1A

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

FMMT491 产品概述

概要

FMMT491 是一种由 SHIKUES(时科)生产的高性能 NPN 双极晶体管(BJT),封装在紧凑的 SOT-23 包装中。这种三极管以其卓越的电气性能和广泛的应用场景而受到广泛欢迎,特别适用于需要高频率和高电流驱动能力的电子系统。

基础参数

以下是 FMMT491 的一些关键参数:

  • 功率(Pd): 500 mW

    • 这表明该三极管可以在正常操作条件下承受的最大功率,确保其在各种应用中保持稳定运行。
  • 商品分类: 三极管(BJT)

    • 作为一种基本的电子开关和放大器元件,BJT 广泛用于各种电子设备中。
  • 晶体管类型: NPN

    • NPN 型三极管在集电极和基极之间施加正电压时会导通,这使得它在许多数字和模拟电路中非常有用。
  • 特征频率(fT): 100 MHz

    • 这个参数表示三极管的最大切换频率,表明 FMMT491 适合用于高频应用,如射频放大器、开关电源和高频信号处理。
  • 直流电流增益(hFE@Ic,Vce): 200 @ 100 mA, 1 V

    • 直流电流增益是指基极电流与集电极电流之间的比值。在这种情况下,hFE 为 200,这意味着对于每个通过基极的微安电流,集电极将有200倍的电流流过。这是一个很好的指标,表明该三极管具有良好的放大能力。
  • 集射极击穿电压(Vceo): 60 V

    • 这是指在基极短路到发射极时,集电极与发射极之间可以承受的最大电压。这个参数保证了在正常操作范围内,三极管不会因为过高的电压而损坏。
  • 集电极-发射极饱和电压(VCE(sat)@Ic,Ib): 500 mV @ 800 mA, 80 mA

    • 饱和电压是指当三极管完全导通时,集电极与发射极之间的最小电压差。在这种情况下,当集电极电流为 800 mA,基极电流为 80 mA 时,饱和电压仅为 500 mV。这表明 FMMT491 在饱和状态下具有很低的电压降,减少了能量损耗。
  • 集电极截止电流(Icbo): 100 nA

    • 这是指在基极短路到发射极且没有外部电流输入的情况下,集电极可能流过的最大漏电流。这个参数很小,说明 FMMT491 在截止状态下有很好的绝缘性。
  • 集电极电流(Ic): 1 A

    • 这是指三极管可以承受的最大连续集电极电流。这个参数保证了 FMMT491 可以处理较大的电流,适合用于需要高驱动能力的应用。

应用场景

FMMT491 因其优异的性能和紧凑的封装,适用于以下几个主要应用场景:

  1. 高频放大器:

    • 由于其高特征频率(100 MHz),FMMT491 非常适合用于射频(RF)和微波应用中的前端放大器或中频放大器。
  2. 开关电源:

    • 其高集电极电流(1 A)和低饱和电压(500 mV)使得 FMMT491 成为开关模式电源(SMPS)中的理想选择,可以提高效率并减少热量生成。
  3. 数字逻辑门和驱动器:

    • 作为一种 NPN 三极管,FMMT491 可以用来构建各种数字逻辑门,如 NOT、AND 和 OR 逻辑门。此外,它也可以作为驱动器用于驱动 LED、继电器或其他负载。
  4. 音频设备:

    • 在音频应用中,FMMT491 可以用来构建低噪声前级放大器或功率级放大器,尤其是在需要高频响应和低失真的情况下。
  5. 汽车电子系统:

    • 由于其高耐压能力(60 V)和高电流处理能力,FMMT491 适合用于汽车电子系统中的各种控制和驱动应用,如发动机控制单元、传感器接口等。

优势

  • 高频性能: 特征频率高达 100 MHz,使其适合用于各种高频应用。
  • 高电流驱动能力: 最大集电极电流为 1 A,适合用于需要高驱动能力的场景。
  • 低饱和电压: 只有 500 mV 的饱和电压,减少能量损耗,提高系统效率。
  • 紧凑封装: SOT-23 封装使得它非常适合用于空间有限但需要高性能的电子设备中。

总结

FMMT491 是一款功能强大且多功能的 NPN 三极管,通过其出色的电气性能和紧凑的封装,广泛应用于各种高频、高电流和高效率的电子系统中。无论是在射频放大、开关电源还是数字逻辑门等领域,FMMT491 都是一个值得考虑的选择。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.